ref: 27e3ce47b705e8c01f28c38089a3e8ad9a797698
parent: c1c72f6cfd9f4360993888dc306eeb7bbf1f4256
author: mkf <mkf@cloud9p.org>
date: Sun Dec 3 02:42:47 EST 2023
pc/user.c: import user mangment related tools
--- /dev/null
+++ b/pc/user.c
@@ -1,0 +1,96 @@
+#include <u.h>
+#include <libc.h>
+#include <user.h>
+#include <mem.h>
+#include <err.h>
+
+user_t adam =
+{+ .id = 1,
+ .name = "adam",
+};
+
+user_t cuser;
+ll_t *users;
+
+static int
+checkname(char *s)
+{+ for(int i = 0 ; i < strlen(s) ; i++)
+ {+ if(!isalpha(s[i]))
+ return INVALID_USERNAME;
+ }
+ return OK;
+}
+
+static int
+checkpass(char *s)
+{+ if(strlen(s) < PASSWD_MAX)
+ return INVALID_PASSWORD;
+
+ return OK;
+}
+
+void
+users_init(void)
+{+ users = malloc(sizeof(ll_t*));
+ adam.pass = adler32("1234");+ users->val = &adam;
+ users->next = nil;
+}
+
+user_t*
+useradd(char *name, char *pass)
+{+ ll_t *t;
+ user_t *u;
+
+ if(checkname(name) != OK)
+ return nil;
+
+ if(checkpass(pass) != OK)
+ return nil;
+
+ /* check if there are any duplicates */
+ t = users;
+ while(t != nil)
+ {+ u = t->val;
+ if(!strcmp(name, u->name))
+ return nil;
+ t = (ll_t*)t->next;
+ }
+
+ u = (user_t*)malloc(sizeof(user_t));
+ u->id = lastuser->id + 1;
+ u->name = name;
+ u->pass = adler32(pass);
+
+ lladd(t, u);
+ return u;
+}
+
+/* TODO: fix deleting first entry in users */
+int
+userdel(user_t* user)
+{+ ll_t *t, *prev;
+ user_t *u;
+
+ t = users;
+ while(t != nil)
+ {+ prev = t;
+ u = t->val;
+ if(u = user)
+ break;
+ t = (ll_t*)t->next;
+ }
+ if(t = nil)
+ return NO_SUCH_USER;
+
+ return lldel(t);
+}